Characteristics of diatomite-alginate-Fe3O4 composite as a phosphate adsorbent

Technological approaches to the use of diatomaceous earth as a raw material for creation composite adsorbents wastewater treatment from phosphate ions are analysed. It is shown that developed surface diatomite can be used create granular adsorbent, and iron (III) oxides (magnetite, goethite, lepidocrocite, ferrihydrite, hematite goethite) environmentally safe, cheap, economically feasible modifiers. Emphasis placed on possibility obtaining magnetic granules due formation magnetite. The deposition method applied adsorbent proposed.
 influence concentration static strength was established. determined diameter nozzle also an important factor. selected technical solutions aimed at solving problems granule hardening ensuring high adsorption activity. Experimental studies synthesis granulation alginate - magnetite have increase in content leads natural size granules. When increasing 1.5 mm 3.5 mm, example, 1.5-4.0 (dc = mm), 2.0-5.0 3.0 mm) 2.5-5.0 mm). more than 20% does not allow carry out high-quality experimental installation viscosity suspension. relationship between gel dried. process application active phase investigated. dependence quality solid measured range 17 25 kPa. established with layer has properties. PO43- anions aqueous studied. For Fe3O4 capacity 4 9 mg / g, respectively. obtained set functional properties promising modern water purification systems.